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3M Speedglas

3M Speedglas Adflo Air Respirator with Heavy-duty Battery 837731

£738.00 Inc. VAT
£615.00 Ex. VAT
UK mainland delivery only. This item contains a lithium battery and travels by road courier. We cannot deliver it to Northern Ireland, the Isle of Man, the Channel Islands, the Scottish islands, the Isles of Scilly, or outside the UK.

4 in stock

UK Online Price ComparisonVerified 11 September 2026 · updated daily
★ thefacemaskstore.co.uk£738.00Best price
WIRS (out of stock)£874.80+£136.80
Engweld (out of stock) (last verified)£930.00+£192.00
United Welding (out of stock)£1,012.54+£274.54

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3M Speedglas Adflo Powered Air Respirator with Heavy-Duty Battery (837731)

The 3M Speedglas Adflo is a belt-mounted powered air-purifying respirator (PAPR) for welding. It connects directly to any 3M Speedglas series welding helmet and, with the particle filter fitted, provides a nominal protection factor of up to 500 (TH3) depending on the helmet used. This 837731 kit is supplied with the longer-running heavy-duty battery.

Two airflow settings (170 and 200 litres per minute) let the welder balance airflow against battery life. A particle filter is included; optional gas filters (837242 or 837542) and an odour filter (837110) can be added for work where gases or vapours are present.

What’s included

  • 3M Adflo 837730 powered air turbo unit
  • Heavy-duty battery
  • Battery charger
  • Self-adjusting breathing tube with QRS (Quick Release Swivel)
  • Airflow indicator
  • Particle filter, prefilter and spark arrestor
  • Belt
  • 12-month warranty (full terms on request)
  • Gas filters are sold separately

Key features

  • Particle protection up to TH3 (nominal protection factor up to 500) when used with a 3M Speedglas welding helmet — the exact NPF depends on the headtop fitted
  • Connects directly to any 3M Speedglas series respiratory welding helmet
  • Two airflow rates: 170 and 200 litres per minute
  • Heavy-duty battery: approximately 10–13 hours run time; charge time approximately 5.5 hours
  • Expandable with optional gas filters (837242 or 837542) and an odour filter (837110)

Specifications

  • Part number (MPN): 837731
  • 3M ID: 7100166698 · EAN: 04046719806638
  • Type: Belt-mounted powered air-purifying respirator (PAPR)
  • Protection: NPF 50–500 (up to TH3 with a Speedglas helmet); particle filter
  • Battery: Heavy-duty — approx. 10–13 hours; charge approx. 5.5 hours
  • Airflow: 170 / 200 litres per minute
  • Compatibility: 3M Speedglas series welding helmets

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